A member of the Chaos Computer Club has shown how you can use photos to reconstruct a person's fingerprint — and to prove his point, he replicated the thumbprint of the German defense minister, Ursula von der Leyen. »12/29/14 2:00pm 12/29/14 2:00pm

Passwords and PINs are notoriously difficult to remember. But it just so happens that we're exceptionally good at remembering distinct faces — a psychological quirk that security experts now say could be the next big thing in authentication. »6/24/14 8:40am 6/24/14 8:40am

Not long ago, fingerprints were the cutting edge of biometric profiling. Today, the use of biosignatures to identify individuals has expanded to include everything from iris and facial scans right through to DNA profiling and even the unique shape of a person's ass. Here's what you need to know about how companies and… »2/12/14 11:30am 2/12/14 11:30am

Social media can be problematic for professionals who don't want their bosses to see unflattering college party photos. But it's even worse for people whose livelihood literally depends on anonymity, like undercover cops. What happens if the gang you've infiltrated finds your grinning mug in Facebook photos from the… »8/27/11 3:20pm 8/27/11 3:20pm

Charles Darwin once speculated that the use of stone tools by our ancient ancestors had profoundly influenced the evolution of our hands. Now, 140 years later, we've discovered that, once again, Darwin knew exactly what he was talking about. »3/07/11 1:20pm 3/07/11 1:20pm